Quote:
Originally Posted by daveinaz
... Do you know how the battery life of the internal TPMS compares to external ones. I think external is recommended to replace once a year.
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That's a very interesting question!
My F250 was 3 years old when I bought it and AFAIK, the batteries in the internal tire sensors hadn't been changed. The original owner had had third parties do his servicing (ie not Ford dealers) and they didn't record what they had done. As of Sept last year, the tire sensors seemed to still be working, so ... I wonder how long they do last.